Machine for swaging saw-teeth



(No Model.)

J. ORM. MACHINE FOR SWAGING SAW TEETH.

No. 309,870. Batemsed Dec. 30, '1884."

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UNITED STATES PATENT @EETCE.

JOHN ORM, OF PADUOAH, KENTUCKY.

MACHINE FOR SWAG ING SAW-TEETH.

SPECIFICATION forming part of Letters Patent No. 309,870, dated December30, 1884.

Application filed August 6, 1884. (No model.)

To all whom, it may concern:

Be it known that .1, JOHN ORM, a citizen of the United States,residing'at Padueah, in the county of McOrac-ken and State of Kentucky,have invented certain new and useful Iniprovements in Machines forSwaging Saw- Teeth, of which the following is a specification, referencebeing had to the accompanying drawings.

The object of this invention is to improve the saw-tooth-swagingmachines patented to me and numbered as follows: No. 106,978, datedAugust 30, 1870, and No. 272,465, dated February 20, 1883, and in whichthe swaging of the saw-teeth is accomplished by a revolving eccentric;and it consists in the construction of the machine and the combinationsof the parts of the machine to accomplish the results aimed at.

In the drawings, Figure 1 represents a side view of the machine. Fig. 2represents a top view of the same. Fig. 3 represents the op eratingparts of Fig. 1 in detail. Fig. 4 represents an upright side view of theeccentric, and a top view with a saw-tooth in place to be swaged; andFig. 5 represents a side and bottom view of the lever-clamp and itsattachinents.

A represents the frame of the machine, which is by preference of iron,although it may be of any suitable material that will not yield or giveway under the necessary strain required in swaging saw-teeth.

B is the table, upon which a saw is placed the teeth of which are to beoperated upon, is preferably made of cast-iron, with a boss orprojection, 13', centrally upon its under side.

G is a horizontal shaft to freely revolve in proper bearings attached tothe frame A, and is put in motion by the driving-band wheel 0 and theclutch c, that slides on shaft 0. On the inner end of shaft 0 is a bevelgear-wheel, I), the teeth of which gear with the teeth on bevelgear-wheel D, that is secured to the upright shaft D,which revolves atits lower end in an ink or step, D, in which it is free to revolve,while its upper end revolves in a bearing attached to frame A or itcanrevolve in a bearing attached to the boss B, or in said boss itself. Inthe upper end of shaft D is a square mortise, (Z, of sufficient depthfor strength to be used in revolving the upright eccentric that is usedto swage the saw-teeth.

E is an upright shaft, having a square tenon, E, at its lower end, tofit into the mortise cl in the upper end of shaft D, and to revolve withthe shaft. The body part of this short shaft E, from point e to e, isconcentric to the axial line of shaft D, and with itself, and this bodypart may be the journal to the upper end of shaft D. At the upper end ofthis shaft E is an eccentric section, F, Fig. 4. This eccentric projectsa distance up through table 13, and above it far enough to act upon anythickness of saw-tooth that it is required to swage. This short shaftand eccentric are removable.

G is a halfcircle cam, fast upon the upper side of gear-wheel D, andrevolves with it, and its center is coincident with the axis of motionof said gear-wheel D and shaft D, and its ends are or may be of lessheight than the body of it.

H is a pivoted clamping-lever, having enlarged ends with holes h htherein, as seen in Fig. 5, and a pivot-hole, h", is made laterallythrough the body of the lever-clamp, but nearer to one end than to theother end, as'is seen in said Fig. 5. In hole It is cut a screw thread,which receives a temper or adj ustiug screw, h,with a wheel, lever, orwinch, j, on its top end to turn the screw to any adjustment required.In hole It isplaced a clamping-pin, I, having a roughened or file-cutsur face upon its outer and projecting end, and is held in place by theholding-screw t, that is screw-tapped through the enlarged end of leverH into hole h and against the tang of pin I, or into a circumferentialgroove therein, if desired. 4

J is a metal fork or grooved stud, with a screw-shank, j, at its lowerend to screw into the table B, and there be permanently fixed in properposition, as seen in Fig. 2.

j is a groove or slot in the top end of the fork J, to receive thelever-clamp H, when a pivot-pin, j, passes through hole h in thelever-clamp and through coincident holes in the fork J at right anglesto the groove j, as seen in Figs. 2 and 5. At a point in table B andunder clampingpin I, as seen in Fig. 2,

is inserted a plate of steel, is, that is file-cut or I corrugated onits top surface and hardened,

on which the saw bears.

L is a steel die or anvil, against the inner 5 end of which the back ofa saw-tooth is placed while being swaged. This die or anvil is placed ina dovetail groove, Z, cut in the upper face of table B, and in which theanvil L can freely slide.

L is a block of metal, made fast to the upper side of the table B, and Zis a wedgeshaped key, that bears against the side of block L, or in agroove that receives it,while the opposite edge bears against the anvilL in I 5 a groove in the end thereof, and by this wedge the anvil isregulated to accommodate the size of the saw-teeth to be swaged.

M is a steel bar fitted to slide freely in a hole in table B, to bedirectly over the path- 20 way of cam G in its revolution, and so thatthe cam will raise the bar upward and hold it up during the continuanceof the cam to bear against it, and as the cam passes it drops a shortdistance by its Own weight. This steel 25 bar is placed in the table tobe directly under and coincident with the lower end of theadjusting-screw h, and against which it bears during the action of thecam in its contact with the bar M. By this construction and arrange- 0ment of the parts, the saw being placed upon the table B in properposition for the revolving eccentric swage to act upon a tooth, the camG raises the bar M against the temperscrew h, raising that end ofclamp-lever H, 5 forcing the opposite end, having the clamping-pin I,down upon the saw,whieh is firmly held between the roughened surfaces ofpin I and the steel plate 7; in table B until the revolving eccentricswage has acted upon the 0' point of a tooth to swage it that is placedbetween the swage E and the anvil L when the cam G will have passed fromits bearing against bar M, when the bar falls and the saw is relievedfrom its clamp, and to be changed in position to bring another tooth inplace to 5 be swaged, when the revolution of cam G again forces the barupward, clamping the saw firmly, when the eccentric is again broughtinto contact with a saw-tooth and that tooth is swaged, so on until allthe teeth in a saw are swaged without stopping the machine after onceadjusting it in its parts, to give ample time for the operator to changethe saw from tooth to tooth while the cam G on shaft D" is making arevolution. By such construction of machine, the whole action of swagingsawteeth is in clear View of the operator.

Having thus fully described my improvement, what I claim, and desire tosecure by Letters Patent, is

1. In a saW-tooth-swaging machine, the revolving upright shaft D, havingthe revolving eccentric F secured to its upper end and revolving intable B, in combination with the adjustable anvil L. substantially asand for the purposes described.

2. In a saw-tooth-swaging machine, the adj usting-wedge Z and block L,in combination with the sliding anvil L, substantially as and for thepurposes described.

3. In a saw-tooth-swaging machine, the com bination of the revolvinghalf-circle cam G, sliding bar M, pivoted clamping-lever H, having screwh, and adjustable pin I, with the roughened-face steel plate It in tableB, all substantially as an d for thepur poses described.

4. In asaw-tooth-swaging machine, the combination of the uprightrevolving and removable short shaft E, having the eccentric F thereon,with the upright revolving shaft D, substantially as and for thepurposes described.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN ORM.

\Vitnesses:

M. B. E. GREIF, M. B. NASH.

